Gas-lamp.



No. 845,186. PATENTED Enza, 1907. c. M. LUNGREN.

GAS LAMP. f

APPLIOATION FILED MAY 6, 1905.

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gmuren* srnfrns PATENT crimen( CHARLES M. LUN GREN, OF BAYONNE, NEWJERSEY, ASSIGN OR TO THE SAFETY CAR HEATING & LIGHTING COMPANY, ACORPORATION OF NEW JERSEY.

GAS-LANBP.

Specicaton of Letters Patent.

Patented Feb. 26, 1907.

T0 a/ZZ whom, it iii/ty concern:

Be it known that I, CHARLES M. LUNGREN, residing at Bayonne, in thecounty of I-Iudson and State of New Jersey, have invented certain newand useful Improvements in Gas- Lamps, of which the following is a full,clear, and exact description, such as will enable others skilled in theartto which it appertains to make and use the same.

This invention relates to gas-lamps and the like, and is especiallyadapted for use in connection with car-lighting systems, althoughcapable of use as to various features in a variety of relations.

One of the objects thereof is to provide a device characterized byincreased efficiency, simplicity, and convenience.

Another object is to provide a device in which the heat generated by thecombustion of the gas in the lamp is employed to raise the temperatureof the burning mixture before it is conducted into the mixing-chamber.

Another object is to so construct a gas-lamp that the air-inspiratordevice is in proximity to the lamp or within the effective zone orsphere of infiuence of radiant heat emitted by the body of the lamp.

Other objects will be in part obvious and in part pointed outhereinafter.

The invention accordingly consists in the features of construction,combination of elements, and arrangements of parts which will beexemplified in the device hereinafter described and the scope of theapplication of which will be indicated in the following claims.

In the accompanying drawings, Figure 1 represents a partly-sectionalelevation of one embodiment, and Fig. 2 a partly-sectional elevation ofanother of the various possible embodiments of my invention.

Similar reference characters refer to similar parts throughout thefigures of the drawings.

As tending to render better understood certain features of my invention,it may be here noted that the invention is shown in connection withgas-lamps provided with an incandescent mantle, which consume in theiroperation a mixture of gas and air. The lamps are therefore providedwith an inspirator device wherein a jet of gas is projected across anair-inlet opening for the purpose of drawing in suitable quantities ofair by inspiration to be mixed with the said gas and constituting theburning mixture. It is well known that a mixture of gas and air is morereadily combustible when the same is, heated, and in prior constructionsnow in general use imperfect combustion has often resulted by reason ofthe burning mixture reaching the point of combustion without beingsufficiently raised in temperature, resulting in a less amount ofillumination and causing the pro d`- ucts of such imperfect combustionto be deposited upon the mantle, lessening its efli ciency and producingother equally disastrous results. j

The above and other defects are eliminated in constructions of thenature of that hereinl after described. Referring to the drawings,y thelamp-body 1, surmounted bydefiector 2 and provided with a passage-way 3'to accom` modate the products of combustion,'has a mixing-chamber 4arranged therein, designed to deliver gas into the bt rnernozzle5, whichnozzle has suitably secured thereto a pendent i 4 mantle 6. By the termburner-nozzle, 'as herein used, I mean that part of the de# vice atwhich combustion takes place. VA flanged member 7, provided withair-inlet passages 8, is secured to the body of the lamp and supports bysuitable means, as a set-v screw 9, a detachable translucent dome 10.?While in this embodiment of my invention I have employed a lamp of thetype above described, I wish it to be understood that I do not intend tolimit myself to that type, nor, in fact, to any particular form of lamp,it being equally applicable to constructions where it is desirable toheat the gas before the same is burned. The mixing-tube 11 leads intothe mixing-chamber and is provided with an airinlet aperture 12 and ashield suitably secured thereto, extending over the air-inlet aperture12 and having a bell-shaped mouth, and which is designed to form apassage-way for leading air to the said air-inlet aperture 12. A fixture13, having a gas-supply conduit 14 and provided with gas-regulatingmeans 15, leads into the mixing-tube and has in its inner extremity asmall opening 16, located adjacent the air-inlet aperture 12. Theapertured end of this fixture and the air-inlet aperture of themixing-tube form what may be termed an inspiraton the purpose of whichhas been above described.

IOO

nvFig'. .1 I vhave Shown the inspirator-are vention that said inspiratorbe located within the effective zone or sphere of the influence ofAradiant heat emitted by said lamp, or in such position as to be withinthe range of the heated ascending products of combustion, While in theconstruction illt strated and described herein I have shown amixing-chamber of s' bstantial size and mixing-tube leading thereinto atan angle or ozt of alinement vi ith the bLrner-nozzle, I desire it to beinderstood that I do not herein claim a lamp struct'; re embodying suchfeat'` res of construction, they being described and claimed in anapplication, Serial No. 259,156, filed May 6, 1905, by Robert M. Dixon.

With the several parts arranged substantially as described the operationof these embodiments of my invention is as follows 'The combustion ofgas in the lamp ca ses radiant heat to be emitted by the body of thelamp, and the inspirator being located within the effective @one orsphere of influence of said heat it becomes heated, resulting in a raiseof temperature of the burning mixture located therein. In the embodimentshown in Fig. 1 the heated products of combtstion, together with theradiant heat emitted by the lamp, operate to heat the mixing air andgas. It will thus be seen that I have constructed a simple andinexpensive apparatts wherein the heat generated by the combiV stion isadvantageously employed to raise the temperature of the burning mixture,resulting in an increased efficiency of the lamp and instring a morecomplete combtstion. The employment of my invention is, however, notlimited to the structures above described, brit is equally applicable toany construction where it is desired to raise the temperatrre of gas andincreaseits readiness and completeness of combrstion.

As many changes could be made in the above construction and manyapparently widely different embodiments of my invention could be madewithout departing from the scope thereof, I intend that all mattercontained in the above description or shown in the accompanying drawingsshall be interpreted as illustrative and not in a limiting sense.

I desire it also to be understood that the language used in thefollowing claims is intended to cover all of the generic features of theinvention -:herein described and all state- .ments of the scope of theinvention, which, as a matter of language, might be said to falltherebetween.

Having thus described my invention, what I claim as new, and desire tosecureby Letters Patent, is-

1. In a device of the class described, in combination, an annularlamp-body terminating at its lower end in a depending guide, amixing-chamber positioned centrally within said body and having aconduit leading downwardly therefrom and terminating a short distancebelow said guide, and a means for conveying combustible gases into saidmixing-chamber.

2. In a device of the class described, in combination, an annularlamp-body terminating at its lower end in a depending guide, amixing-chamber positioned centrally within said body and having aconduit leading downwardly therefrom and terminating a short distancebelow said guide, a means for conveying combustible gases into saidmixing-chamber, and a globe arranged to deflect air downwardly towardthe lower end of said first-mentioned conduit.

3. In a device of the class described, in combination, a lamp-bodyhaving a channel leading therethrough, a burner-nozzle extendingdownwardly from said lamp-body, a guide extending downwardly from saidlampbody and terminating a short distance above the end of said nozzleand adapted to direct the products of combustion therefrom into saidchannel, and an injector positioned exteriorly ofsaid lamp-body outofthe path of the escaping products of combustion and arranged todeliver combustible gases into said mixing-chamber.

4. In a device of the class described, in combination, a lamp-body, anexterior injector, an expansion-chamber within said body and incommunication with said injectcr, and located .directly in the path ofand adapted to be raised in temperature by the products of combustion,means producing products of combustion underlying said expansionchamberand in communication therewith, a globe arranged to deflect a current offresh air downward toward said producing means, and a guide interposedbetween the discharging products of combustion and the incoming freshair.

In testimony whereof I affix my signature in the presence of twowitnesses.

CHARLES M. LUNGREN.

Witnesses:

A. C. MOORE, ELMER E. ALLBEE.

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